1	package antlr;
2	
3	/**
4	 * <b>SOFTWARE RIGHTS</b>
5	 * <p>
6	 * ANTLR 2.5.0 MageLang Institute, 1998
7	 * <p>
8	 * We reserve no legal rights to the ANTLR--it is fully in the
9	 * public domain. An individual or company may do whatever
10	 * they wish with source code distributed with ANTLR or the
11	 * code generated by ANTLR, including the incorporation of
12	 * ANTLR, or its output, into commerical software.
13	 * <p>
14	 * We encourage users to develop software with ANTLR. However,
15	 * we do ask that credit is given to us for developing
16	 * ANTLR. By "credit", we mean that if you use ANTLR or
17	 * incorporate any source code into one of your programs
18	 * (commercial product, research project, or otherwise) that
19	 * you acknowledge this fact somewhere in the documentation,
20	 * research report, etc... If you like ANTLR and have
21	 * developed a nice tool with the output, please mention that
22	 * you developed it using ANTLR. In addition, we ask that the
23	 * headers remain intact in our source code. As long as these
24	 * guidelines are kept, we expect to continue enhancing this
25	 * system and expect to make other tools available as they are
26	 * completed.
27	 * <p>
28	 * The ANTLR gang:
29	 * @version ANTLR 2.5.0 MageLang Institute, 1998
30	 * @author Terence Parr, <a href=http://www.MageLang.com>MageLang Institute</a>
31	 * @author <br>John Lilley, <a href=http://www.Empathy.com>Empathy Software</a>
32	 */
33	import antlr.collections.impl.Vector;
34	
35	class RuleSymbol extends GrammarSymbol {
36		RuleBlock block;	// list of alternatives
37		boolean defined;	// has the rule been defined yet?
38		Vector references;	// list of all nodes referencing this rule
39							// not strictly needed by generic symbol table
40							// but we will almost always analyze/gen code
41		String access;		// access specifier for this rule
42		String comment;		// A javadoc comment if any.
43	
44		public RuleSymbol(String r) {
45			super(r);
46			references = new Vector();
47		}
48		public void addReference(RuleRefElement e) {
49			references.appendElement(e);
50		}
51		public RuleBlock getBlock() {
52			return block;
53		}
54		public RuleRefElement getReference(int i) {
55			return (RuleRefElement)references.elementAt(i);
56		}
57		public boolean isDefined() {
58			return defined;
59		}
60		public int numReferences() {
61			return references.size();
62		}
63		public void setBlock(RuleBlock rb) {
64			block = rb;
65		}
66		public void setDefined() {
67			defined = true;
68		}
69	}
70